Structure and properties of phases in the Cu2-ХSe-Sb2Se3 system. The Cu2-XSe-Sb2Se3 phase diagram

Описание

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.jallcom.2022.164384

Ключевые слова: differential scanning calorimetry, high-temperature x-ray diffraction, phase diagram, phase equilibria, redlich-kister polynomial model, scanning electron microscopy

Аннотация: The phase diagram of the Cu2−XSe-Sb2Se3 system is revisited to clarify ambiguity/disagreement in previously reported data. Ternary Cu3SbSe3 and CuSbSe2 compounds were obtained. In order to confirm that the phases have been identified correctly, crystal structures were solved, and the energy band gaps measured. For the sample contaiПоказать полностьюning 75 mol% Sb2Se3 and 25 mol% Cu1.995Se the temperature range of the stability of the high-temperature CuSb3Se5 phase was determined for the first time. This phase is formed at 445 °С, decomposes following a peritectic reaction at 527 °С, and can be quenched. A high-temperature X-ray diffraction study of a sample containing 75 mol% Sb2Se3 and 25 mol% Cu2Se allowed us to measure the thermal expansion of the CuSbSe2 and Sb2Se3 phases present in the sample. The anisotropy of thermal expansion of CuSbSe2 is similar to that of As2S3 (orpiment); thermal expansion of Sb2Se3 is similar to that of AsS (realgar). The 6 balance equations of the invariant phase transformations involving all the ternary compounds existing in the Cu2−XSe-Sb2Se3 system were suggested for the first time. The temperature and the enthalpies of all these transformations were measured. A phase diagram of the Cu2−XSe-Sb2Se3 system was found for the first time in all the range of concentrations at temperatures from ambient to the complete melting. This diagram takes into consideration the phase equilibria that involve all the ternary compounds that are possible in this system. The liquidus of the Cu2−XSe-Sb2Se3 system was calculated according to Redlich-Kister equation; it agrees with the experimental data within 1–17 °С. © 2022 Elsevier B.V. The phase diagram of the Cu2−XSe-Sb2Se3 system is revisited to clarify ambiguity/disagreement in previously reported data. Ternary Cu3SbSe3 and CuSbSe2 compounds were obtained. In order to confirm that the phases have been identified correctly, crystal structures were solved, and the energy band gaps measured. For the sample containing 75 mol% Sb2Se3 and 25 mol% Cu1.995Se the temperature range of the stability of the high-temperature CuSb3Se5 phase was determined for the first time. This phase is formed at 445 °С, decomposes following a peritectic reaction at 527 °С, and can be quenched. A high-temperature X-ray diffraction study of a sample containing 75 mol% Sb2Se3 and 25 mol% Cu2Se allowed us to measure the thermal expansion of the CuSbSe2 and Sb2Se3 phases present in the sample. The anisotropy of thermal expansion of CuSbSe2 is similar to that of As2S3 (orpiment); thermal expansion of Sb2Se3 is similar to that of AsS (realgar). The 6 balance equations of the invariant phase transformations involving all the ternary compounds existing in the Cu2−XSe-Sb2Se3 system were suggested for the first time. The temperature and the enthalpies of all these transformations were measured. A phase diagram of the Cu2−XSe-Sb2Se3 system was found for the first time in all the range of concentrations at temperatures from ambient to the complete melting. This diagram takes into consideration the phase equilibria that involve all the ternary compounds that are possible in this system. The liquidus of the Cu2−XSe-Sb2Se3 system was calculated according to Redlich-Kister equation; it agrees with the experimental data within 1–17 °С. © 2022 Elsevier B.V.

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Издание

Журнал: Journal of Alloys and Compounds

Выпуск журнала: Vol. 906

Номера страниц: 164384

ISSN журнала: 09258388

Издатель: Elsevier Ltd

Персоны

  • Shtykova M.A. (Department of Inorganic and Physical Chemistry, Institute of Chemistry, Tyumen State University, Volodarsky str. 6, Tyumen, 625003, Russian Federation)
  • Molokeev M.S. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok Str. 50, Building 38, Krasnoyarsk, 660036, Russian Federation, Siberian Federal University, Svobodnyj av. 79, Krasnoyarsk, 660079, Russian Federation)
  • Zakharov B.A. (Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, Novosibirsk, 630090, Russian Federation, Novosibirsk State University, Pirogova str. 2, Novosibirsk, 630090, Russian Federation)
  • Selezneva N.V. (Department of Condensed Matter Physics and Nanoscale Systems, Institute of Natural Sciences and Mathematics, Ural Federal University, Mira str. 19, Yekaterinburg, 620002, Russian Federation)
  • Aleksandrovsky A.S. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok Str. 50, Building 38, Krasnoyarsk, 660036, Russian Federation, Siberian Federal University, Svobodnyj av. 79, Krasnoyarsk, 660079, Russian Federation)
  • Bubnova R.S. (Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, Makarov Emb., 2, St. Petersburg, 199034, Russian Federation)
  • Kamaev D.N. (Department of Physical and Applied Chemistry, Institute of Natural Sciences and Mathematics, Kurgan State University, Sovetskaya str. 2, b. 4, Kurgan, 640020, Russian Federation)
  • Gubin A.A. (Laboratory of Electron and Probe Microscopy, REC “Nanotechnology”, Tyumen State University, Volodarsky str. 6, Tyumen, 625003, Russian Federation)
  • Habibullaev N.N. (Department of Inorganic and Physical Chemistry, Institute of Chemistry, Tyumen State University, Volodarsky str. 6, Tyumen, 625003, Russian Federation)
  • Matigorov A.V. (Engineering Center of Composite Materials Based on Tungsten Compounds and Rare Earth Elements, Tyumen State University, Volodarsky str. 6, Tyumen, 625003, Russian Federation)
  • Boldyreva E.V. (Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, Novosibirsk, 630090, Russian Federation, Novosibirsk State University, Pirogova str. 2, Novosibirsk, 630090, Russian Federation)
  • Andreev O.V. (Department of Inorganic and Physical Chemistry, Institute of Chemistry, Tyumen State University, Volodarsky str. 6, Tyumen, 625003, Russian Federation, Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Pervomaiskaya str. 91, Yekaterinburg, 620990, Russian Federation)

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